CNN  —  There’s an old military adage that an army runs on its stomach, meaning troops need to be well-supplied with food to survive harsh battlefield conditions. In modern times, the US military stockpiles “Meals Ready to Eat” (MREs), full meals that can be consumed with the convenience of just tearing open a bag, to sustain troops in the field. And in Alaska recently , MREs have found new fans: Hungry bears who broke into a storage room at Joint Base Elmendorf-Richardson to feast on the